Improved crimping-brake



dinwi Ciatea JARVlS HOWE, OF MlLFORD,` MASSACHUSETTS.

Letters Pata-nt No. 94,213, dated August 3l, 1869; 'ariterlatell August 21, 1869.

IMPROVED CRIMPINGBRAKE.

The Schedule referred to in these Letters Patent and making peut of the same I To all whom 'it may concern Beit known that'I, JARVIS HOWE, of v Milford, in the'county of Worcester, and State of Massachusetts, have invented anew and imp'oved Crimping-Brake and I do hereby declare that the following is a full, clear, and exact description ofthe construction and voperation of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure 1 is a side view of the machine, showing the fronthalfin section, and the rear half in elevation.

Figure 2 is a rear elevation.

Figure 3 shows one of the inner jaws, (inside riem) with a portion of the frame and one of the slides.

Figure 4 shows the outside of one ofthe slides.

In the said drawings, the various parts are indicated by letters, as follows, viz:

A is the frame-work of the machine.

-B B' are the outer jaws.

C C' are the inner jaws.

D D' are slides fitted in the inner jaws.

E is a screw-bolt, passing through the jaws and slides, holding the outer jaws together, and .having a spring coiled around it, which presses against the movable jaws. j

-Fl is the crimping-blade, or board G is a frame, supporting the crimping-blade.

H is a rack, attached to the said frame.

I is a pinion upon the leverfwheel.

J lare balanced lever-wheels, to raise and lower the crimping-frame. j

Kis a metal piece, having arms projecting from it through slots in the slides D D', having also an inclined plane at its upper end, fitting in a corresponding inclined plane' in the jaws C V(Y, and havingr at its lower end a screw fitting in the wheel L.

L is a hand-wheel, through which the screw on the armed piece K passes, and which serves to raise or depress the armed piece, by means of the nutL.

M is a clutch, which is iirmly secured to the i'ame A, and holds the hand-wheel L and nut 'L'.

(t a' are inclined planes, attached to the slides 1) D', and fitted in corresponding inclines in the stationary jaws B B.

'n n are adjustable ways in which the feet of the inner jaws slide. Y

o o are trucks on which the jaws c c move.

s is a balance-weight upon the lever-wheel J.

The process of breaking down a boot-front by this mechanism is as follows :P

The operator stands between thewheels J, and in front of the machine.' When he turns back the wheels J, the racks and pinions raise the crimping-blade above the jaws, and the balance-weight s, upon the wheel, holds it in that position. He then turns the handwheel L, moving the armed piece K, which lifts the slides D D', and forces their inclined planes a a to impinge o n the corresponding inclines in the outer jaws, thereby causing the jaws to approach each other. He then places the boot-front in position, and forces the crimping-board down upon it, at the same time separating the inner jaws (by turning the hand-wheel L) to the required distance. The crimping-blade is then forced home, as in the common brake.V The handwheel L is then turned back, and the leather removed, as in the common brake.

The wheels J J, and rack and pinion, operate to raise and lower the crimping-board, as the common lever and rack and pinion operate in the well-known form of brake; but by theuse of the wheels, I obtain certain practical advantages, which will be obwous to l those skilled in the art. The common form of lever, however, can be used, if preferred, in my brake.

The wheel L is used to operate the inner jaws C C'. When 'turned 'in one direction, it raises the armed piece K, the arms of 4which raise the slidcs D D', which,.by means of their inclined planes a n', -throw the inner jaws C C inward. When turned in the other,v direction, the armed piece K is lowered, thus lowering the slides and causing the inner jaws to separate, by means of the double inclines on the head of the armed piece K and thespring on the bolt E.

The outer jaws B B are important parts of my invention.

The inner jaws should be at a slight inclination to cach other, which should be always the same, when the leather is being forced between them by the crimpin g-board but asthe thickness ofthe boot-fronts varies, the inner jaws mustbe at varying distances from each other while the leather is lbeing crimped, and they must also be moved to and from cach other in the regular operation of the machine.

Itwill be seen that in my machine' the inner jaws have always the same relation to the outer jaws, except that they move to and from them; consequently,

if the outer jaws are inclined toward each other, the

inner jaws will have the saine relation, and will not change that inclination while being moved back and forth.

The outer jaws should be held-in their correct relation to each other, and I prefer to use a bolt, connecting them for this purpose. If a screw be cut upon one end of this bolt, ,it will also aii'ord an eifectiveand ready means` of insuring the delicate adjustment of these jaws, as by turning the holt, the upper ends of the outer jaws can bel brought nearertogether orv thrown further apart, even when the jaws arel made rof cast-iron, and cast in one 'piece with the cross-piece of the frame A, as I usually make them. Y

I do not wish to limit myself to outer or inner jaws, having the slight inclination spoken of, as my machine the desired motion to the inner jaw.

ever, to have the outerjaw east in one piece with The will operate well Without this inclination, but I do regard this feature of my machine as of great importance.

The principleeof this part of my invention consists in the use ot' an outer jaw to serve as a support to the inner jan', and a bearing for mechanism by which to give the requisite motion to the inner jan'.

The Inode of embodying this principle, shovvn in the drawings, is the best known to me; but it is obvious that it' may be embodied in very many other forms,

lent inechanisin, may be substituted Vforfthe inclined.y

pla-ne, to move the inner jaw to and from the outer jaw; or the slide D may be made a part of the inner jaw, and the outer' jaw be moved up and 'down to gire 'cross-piece A. l

The inner jaws C C do not ditfer materially from the jaws of tno well-known crimping-brake, except that they have Vinclined planes on their inner faces, and are provided with trucks, which enable them to slidemore fieely on the crossrpieces. The trucks are I prefer, hoiv'- p i not, however, essential. I prefer to use the Ways n n, as the means of connecting these jaws with the cross'- pieces, but the well-known methodr will answer.

'hat I Vclaim as my inventiomend desire to secure by Letters Patent, is

l. The outer jaw, constructed and operating substantially as and for the purpose specified.

2. The outer jaws, -when connected together by a screw-bolt, substautiallyas and for the purpose specified.

3. The piece K, constructed and operating substantially as and Vfor the purpose specified.

nut L, and inclines ay it' and c o', substantially `as described.

J Ali-VIS HOWE.

Witnesses J. E. MAYNAD1ER, GHAS. F. SLEEPER. 

